This is not the bug with ubuntukylin-keyring, but rather archive.ubuntukylin.com:10006
As the key in ubuntukylin-keyring is the correct key 4096R/6CE3 5A4E BAB6 7609 4476 BE7C D259 B755 5E1D 3C58
Yet the archive.ubuntukylin.com:10006 is 4096R/05E5 9D00 DAFD 8474 E9A7 BE19 0319 EDBA 198B F247